joshb1050 commented on code in PR #4972:
URL: https://github.com/apache/activemq-artemis/pull/4972#discussion_r1636884171
##########
artemis-server/src/main/java/org/apache/activemq/artemis/core/postoffice/impl/SimpleAddressManager.java:
##########
@@ -160,15 +172,7 @@ public Collection<Binding> getMatchingBindings(final
SimpleString address) throw
@Override
public Collection<Binding> getDirectBindings(final SimpleString address)
throws Exception {
SimpleString realAddress = CompositeAddress.extractAddressName(address);
- Collection<Binding> bindings = new ArrayList<>();
-
- nameMap.forEach((bindingUniqueName, bindingAddressPair) -> {
- if (bindingAddressPair.getA().getAddress().equals(realAddress)) {
- bindings.add(bindingAddressPair.getA());
- }
- });
-
- return bindings;
+ return new ArrayList<>(directBindingMap.getOrDefault(realAddress,
Collections.emptyList()));
Review Comment:
It's a copy operation, and works efficiently internally (at least in JDK
17). We could do a null check instead and return a new list if null, but this
has to be a defensive copy since the tests will otherwise fail.
```
public ArrayList(Collection<? extends E> c) {
Object[] a = c.toArray();
if ((size = a.length) != 0) {
if (c.getClass() == ArrayList.class) {
elementData = a;
} else {
elementData = Arrays.copyOf(a, size, Object[].class);
}
} else {
// replace with empty array.
elementData = EMPTY_ELEMENTDATA;
}
}
```
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